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fzus63 kmqt 141957
glfls 
expires:202104150400;;554514

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed apr 14 2021

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...a broad 30.0 inch low spread out over much of the 
upper great lakes is expected to very slowly shift eastward to the
eastern great lakes tonight through late thursday while 
strengthening to 29.8 inches. at the same time, a 30.4 inch ridge 
extends from the northern plains northward through the canadian 
prairies to hudson bay. this ridge remains in place through friday
before slowly drifting south towards the rockies on saturday and 
weakening to 30.3 inches. on sunday a 29.8 inch trough develops 
over the northern plains and begins moving east towards lake 
superior.


lsz162-150400-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
357 pm edt wed apr 14 2021 /257 pm cdt wed apr 14 2021/

.late this afternoon...northwest winds 10 to 20 knots. scattered
rain showers. waves calm to 2 feet. 
.tonight...north winds 10 to 20 knots. isolated rain showers
through midnight. waves building to 1 to 3 feet. 
.thursday...north winds 10 to 20 knots becoming southwest 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.thursday night...west winds 5 to 15 knots becoming north 10 to
20 knots after midnight, then becoming northeast 5 to 15 knots
late. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots veering southeast by mid
afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots veering south by mid
afternoon. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots becoming north 15 to
25 knots. a chance of rain showers. a chance of snow showers.
waves building to 1 to 3 feet. 
.monday...north winds 15 to 25 knots becoming northwest 10 to
20 knots. a chance of snow showers. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 

$$
fzus63 kmqt 141957
glfls 
expires:202104150400;;554515

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed apr 14 2021

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...a broad 30.0 inch low spread out over much of the 
upper great lakes is expected to very slowly shift eastward to the
eastern great lakes tonight through late thursday while 
strengthening to 29.8 inches. at the same time, a 30.4 inch ridge 
extends from the northern plains northward through the canadian 
prairies to hudson bay. this ridge remains in place through friday
before slowly drifting south towards the rockies on saturday and 
weakening to 30.3 inches. on sunday a 29.8 inch trough develops 
over the northern plains and begins moving east towards lake 
superior.


lsz263-150400-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
357 pm edt wed apr 14 2021

.late this afternoon...north winds 10 to 20 knots. scattered rain
showers. waves 1 to 3 feet. 
.tonight...north winds 15 to 25 knots. a slight chance of drizzle
and isolated rain showers through midnight. patchy drizzle after
midnight. waves building to 3 to 6 feet occasionally to 8 feet. 
.thursday...north winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing west late. waves
subsiding to calm to 2 feet. 
.thursday night...west winds 10 to 20 knots becoming north 5 to
15 knots after midnight, then increasing to 10 to 20 knots late.
waves building to 1 to 3 feet. 
.friday...north winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...north winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots. waves calm to 2 feet.
.sunday...west winds 5 to 15 knots becoming northeast 15 to
25 knots. waves building to 1 to 3 feet. 
.monday...north winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. 

$$

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